"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   56.80652
        63,   56.69754
       125,   55.04371
       250,   48.45716
       500,   55.75978
      1000,   65.99928
      2000,   53.67843
      4000,   39.20206
      8000,   33.50983
     16000,   18.61811